Corsi's block-tapping test and WISC—R were given to 1122 children from 11 to 16 years of age. Corsi's raw scores were transformed into standard scores like those for the WISC—R subtests. Reliabilities, standard score equivalents of raw scores, correlations with scores on WISC—R subtests, scales and factor scores are presented. A Principal Factor analysis of intercorrelations for Corsi's test and WISC—R subtests shows a three-factor solution with Corsi's test loading on the Third Factor. Results agree with Wielkiewicz's (1990) hypothesis about the construct underlying WISC—R Third Factor as “executive” and short-term memory processes.
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